/// <summary>
/// Call all subscribers in parallel and wait for all to complete.
/// </summary>
/// <typeparam name="T">The type of the results.</typeparam>
/// <param name="ServerTimestamp">The timestamp of the event.</param>
/// <param name="OCPIAPI">The sending OCPI/HTTP API.</param>
/// <param name="Request">The incoming request.</param>
/// <param name="Response">The outgoing response.</param>
/// <param name="VerifyResult">A delegate to verify and filter results.</param>
/// <param name="Timeout">A timeout for this operation.</param>
/// <param name="DefaultResult">A default result in case of errors or a timeout.</param>
public Task <T> WhenFirst <T>(DateTime ServerTimestamp,
HTTPAPI OCPIAPI,
OCPIRequest Request,
OCPIResponse Response,
Func <T, Boolean> VerifyResult,
TimeSpan?Timeout = null,
Func <TimeSpan, T> DefaultResult = null)
{
#region Data
List <Task> _invocationList;
Task WorkDone;
Task <T> Result;
DateTime StartTime = DateTime.UtcNow;
Task TimeoutTask = null;
#endregion
lock (subscribers)
{
_invocationList = subscribers.
Select(callback => callback(ServerTimestamp, OCPIAPI, Request, Response)).
ToList();
if (Timeout.HasValue)
{
_invocationList.Add(TimeoutTask = Task.Run(() => System.Threading.Thread.Sleep(Timeout.Value)));
}
}
do
{
try
{
WorkDone = Task.WhenAny(_invocationList);
_invocationList.Remove(WorkDone);
if (WorkDone != TimeoutTask)
{
Result = WorkDone as Task <T>;
if (Result != null &&
!EqualityComparer <T> .Default.Equals(Result.Result, default(T)) &&
VerifyResult(Result.Result))
{
return(Result);
}
}
}
catch (Exception e)
{
DebugX.LogT(e.Message);
WorkDone = null;
}
}while (!(WorkDone == TimeoutTask || _invocationList.Count == 0));
return(Task.FromResult(DefaultResult(DateTime.UtcNow - StartTime)));
}
/// <summary>
/// Call all subscribers in parallel and wait for all to complete.
/// </summary>
/// <param name="ServerTimestamp">The timestamp of the event.</param>
/// <param name="OCPIAPI">The sending OCPI/HTTP API.</param>
/// <param name="Request">The incoming request.</param>
public Task WhenAll(DateTime ServerTimestamp,
HTTPAPI OCPIAPI,
OCPIRequest Request)
{
Task[] _invocationList;
lock (subscribers)
{
_invocationList = subscribers.
Select(callback => callback(ServerTimestamp, OCPIAPI, Request)).
ToArray();
}
return(Task.WhenAll(_invocationList));
}
/// <summary>
/// Call all subscribers sequentially.
/// </summary>
/// <param name="ServerTimestamp">The timestamp of the event.</param>
/// <param name="OCPIAPI">The sending OCPI/HTTP API.</param>
/// <param name="Request">The incoming request.</param>
public async Task InvokeAsync(DateTime ServerTimestamp,
HTTPAPI OCPIAPI,
OCPIRequest Request)
{
OCPIRequestLogHandler[] _invocationList;
lock (subscribers)
{
_invocationList = subscribers.ToArray();
}
foreach (var callback in _invocationList)
{
await callback(ServerTimestamp, OCPIAPI, Request).ConfigureAwait(false);
}
}
/// <summary>
/// Call all subscribers in parallel and wait for any to complete.
/// </summary>
/// <param name="ServerTimestamp">The timestamp of the event.</param>
/// <param name="OCPIAPI">The sending OCPI/HTTP API.</param>
/// <param name="Request">The incoming request.</param>
/// <param name="Timeout">A timeout for this operation.</param>
public Task WhenAny(DateTime ServerTimestamp,
HTTPAPI OCPIAPI,
OCPIRequest Request,
TimeSpan?Timeout = null)
{
List <Task> _invocationList;
lock (subscribers)
{
_invocationList = subscribers.
Select(callback => callback(ServerTimestamp, OCPIAPI, Request)).
ToList();
if (Timeout.HasValue)
{
_invocationList.Add(Task.Delay(Timeout.Value));
}
}
return(Task.WhenAny(_invocationList));
}
/// <summary>
/// Add a method callback for the given URL template.
/// </summary>
/// <param name="CommonAPI">The OCPI Common API.</param>
/// <param name="Hostname">The HTTP hostname.</param>
/// <param name="HTTPMethod">The HTTP method.</param>
/// <param name="URLTemplate">The URL template.</param>
/// <param name="HTTPContentType">The HTTP content type.</param>
/// <param name="URLAuthentication">Whether this method needs explicit uri authentication or not.</param>
/// <param name="HTTPMethodAuthentication">Whether this method needs explicit HTTP method authentication or not.</param>
/// <param name="ContentTypeAuthentication">Whether this method needs explicit HTTP content type authentication or not.</param>
/// <param name="OCPIRequestLogger">A OCPI request logger.</param>
/// <param name="OCPIResponseLogger">A OCPI response logger.</param>
/// <param name="DefaultErrorHandler">The default error handler.</param>
/// <param name="OCPIRequestHandler">The method to call.</param>
public static void AddOCPIMethod(this CommonAPI CommonAPI,
HTTPHostname Hostname,
HTTPMethod HTTPMethod,
HTTPPath URLTemplate,
HTTPContentType HTTPContentType = null,
HTTPAuthentication URLAuthentication = null,
HTTPAuthentication HTTPMethodAuthentication = null,
HTTPAuthentication ContentTypeAuthentication = null,
OCPIRequestLogHandler OCPIRequestLogger = null,
OCPIResponseLogHandler OCPIResponseLogger = null,
HTTPDelegate DefaultErrorHandler = null,
OCPIRequestDelegate OCPIRequestHandler = null,
URLReplacement AllowReplacement = URLReplacement.Fail)
{
CommonAPI.HTTPServer.
AddMethodCallback(Hostname,
HTTPMethod,
URLTemplate,
HTTPContentType,
URLAuthentication,
HTTPMethodAuthentication,
ContentTypeAuthentication,
(timestamp, httpAPI, httpRequest) => OCPIRequestLogger?.Invoke(timestamp, null, HTTP.OCPIRequest.Parse(httpRequest, CommonAPI)),
(timestamp, httpAPI, httpRequest, httpResponse) => OCPIResponseLogger?.Invoke(timestamp, null, httpRequest.SubprotocolRequest as OCPIRequest,
(httpResponse.SubprotocolResponse as OCPIResponse)
?? new OCPIResponse(httpRequest.SubprotocolRequest as OCPIRequest,
2000,
"OCPIResponse is null!",
httpResponse.HTTPBodyAsUTF8String,
httpResponse.Timestamp,
httpResponse)),
DefaultErrorHandler,
async httpRequest => {
try
{
// When no OCPIRequestLogger was used!
if (httpRequest.SubprotocolRequest is null)
{
httpRequest.SubprotocolRequest = OCPIRequest.Parse(httpRequest, CommonAPI);
}
var OCPIResponseBuilder = await OCPIRequestHandler(httpRequest.SubprotocolRequest as OCPIRequest);
var httpResponseBuilder = OCPIResponseBuilder.ToHTTPResponseBuilder();
httpResponseBuilder.SubprotocolResponse = new OCPIResponse(OCPIResponseBuilder.Request,
OCPIResponseBuilder.StatusCode ?? 3000,
OCPIResponseBuilder.StatusMessage,
OCPIResponseBuilder.AdditionalInformation,
OCPIResponseBuilder.Timestamp ?? DateTime.UtcNow,
httpResponseBuilder.AsImmutable);
return(httpResponseBuilder);
}
catch (Exception e)
{
return(new HTTPResponse.Builder(HTTPStatusCode.InternalServerError)
{
ContentType = HTTPContentType.JSON_UTF8,
Content = new OCPIResponse <JObject>(
JSONObject.Create(
new JProperty("description", e.Message),
new JProperty("stacktrace", e.StackTrace.Split(new String[] { Environment.NewLine }, StringSplitOptions.None).ToArray()),
new JProperty("source", e.TargetSite.Module.Name),
new JProperty("type", e.TargetSite.ReflectedType.Name)
),
2000,
e.Message,
null,
DateTime.UtcNow,
null,
(httpRequest.SubprotocolRequest as OCPIRequest)?.RequestId,
(httpRequest.SubprotocolRequest as OCPIRequest)?.CorrelationId
).ToJSON(json => json).ToUTF8Bytes(),
Connection = "close"
});
}
},
AllowReplacement);
}
